Bio polyetherurethane composites with high content of natural ingredients: hydroxylated soybean oil based polyol, bio glycol and microcrystalline cellulose

Głowińska, Ewa; Datta, Janusz

doi:10.1007/s10570-015-0825-6

Cited by 62 publications

(34 citation statements)

References 24 publications

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“…The significant differences were observed for the composite sample, with 15 mass% of non-modified sisal fiber; this value is the lowest one compared to rest materials. The elevated values of loss modulus of the obtained composites are advantageous because less energy is irreversibly lost by the materials [28]. These results confirm also the decreasing tendency in the hardness and rebound resilience properties of the prepared bio-PU composites.…”

Section: Dynamic Mechanical Analysissupporting

confidence: 79%

“…The stretching vibrations of C-O-C group were registered at 1103 and 1065 cm -1 ; the vibrations correspond to free C-O-C group and hydrogen-bonded C-O-C groups, respectively. The wavenumbers at 2854 and 2918 cm -1 correspond to the stretching vibrations of CH 2 groups, while the wavenumber value at 1414 cm -1 interprets as deformation vibrations of the same groups [28].…”

Section: Chemical Structurementioning

confidence: 99%

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Effect of sisal fiber filler on thermal properties of bio-based polyurethane composites

Głowińska

Datta

Parcheta

2017

J Therm Anal Calorim

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This work is mainly focused on study of thermal and thermomechanical properties of obtained bio-based polyurethane (coded as bio-PU) composites via using different types of bio-components (bio-glycol, modified soybean oil and sisal fiber) in the procedure. The chemical structure, morphology and mechanical properties were also investigated and described in this manuscript in order to know more perfect characterization of produced composites. The bio-based polyurethane matrix of composites was synthesized via prepolymer method. Bio-PU composites were produced by dispersing 5 and 15 mass% of sisal fibers into the polyurethane matrix during their synthesis. To investigate the thermal stability of sisal fibers and bio-PU composites, the thermogravimetric method (TG) was used. Thermomechanical tests were performed by means of dynamic mechanical analysis (DMA). Based on the results of thermomechanical analysis, it was found that the sisal fibers amount has the impact on storage and loss modulus. Chemical structure was confirmed by FTIR spectra. Mechanical results and scanning microscopy images of the composites showed good interfacial adhesion between sisal fibers and the bio-based PU matrix.

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Section: Dynamic Mechanical Analysissupporting

confidence: 79%

Section: Chemical Structurementioning

confidence: 99%

Effect of sisal fiber filler on thermal properties of bio-based polyurethane composites

Głowińska

Datta

Parcheta

2017

J Therm Anal Calorim

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“…The analyzed samples were a thin solid state. The measurement took place at room temperature, and the degree of phase separation (DPS) as well as the degree of phase mixing (DPM) was calculated according to the following equations [21].…”

Section: Methodsmentioning

confidence: 99%

Investigation of Thermoplastic Polyurethanes Synthesized via Two Different Prepolymers

2019

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The man aim of this work was to investigate the effect of the molecular weight of polyols, mixture of prepolymers, and [NCO]/[OH] molar ratio used during the prepolymer chain extending step on the chemical structure, thermomechanical and mechanical properties, and thermal stability of thermoplastic poly(ether-urethane)s In this work thermoplastic poly(etherurethane)s were synthesized by using polyols with a various molecular weight, 4,4′-diphenylmethane diisocyanate and biobased glycol. Materials were obtained by a two-step method. The tests were carried out for polyurethanes obtained from a mixture of prepolymers and for reference samples. In the case of materials obtained with using mixture of prepolymers, the ratio of both prepolymers was determined on 50/50 weight percent. Soft segments of materials prepared with using mixture consist of two different polyols. The chemical structure was analyzed using FTIR spectroscopy. The Gaussian deconvolution technique was used to study the hydrogen bonding as well as to decompose carbonyl region of three peaks in various TPUs. The thermal degradation behavior was investigated by using thermogravimetric analysis at heating rates of 10 °C/ min. It was confirmed that the mixture of prepolymers has an effect of the degree of phase separation, thermal stability and selected properties of synthesized thermoplastic poly(ether-urethane)s.

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“…Information regarding the amounts of free carbonyl bonded and H‐bonded ‐C = O (in amorphous and ordered regions) were obtained by the deconvolution of spectrum in the carbonyl region. The degree of phase mixing (DPM) and the degree of phase separation (DPS) were calculated using the following equations :

R = \frac{A_{1,703}}{A_{1,730}}

normalD normalP normalS = \frac{R}{R + 1}

normalD normalP normalM = 1 - normalD normalP normalS

…”

Section: Methodsmentioning

confidence: 99%

Effect of molar ratio [NCO]/[OH] groups during prepolymer chains extending step on the morphology and selected mechanical properties of final bio‐based thermoplastic poly(ether‐urethane) materials

Kasprzyk

Datta

2018

Polymer Engineering & Sci

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The main aim of this work was to investigate the effect of [NCO]/[OH] molar ratio used during the prepolymer chain extending step (with bio‐based diols) on the chemical structure, and thermomechanical and mechanical properties of thermoplastic poly(ether‐urethane)s. Thermoplastic poly(ether‐urethane)s were obtained from bio‐based polyol (polytrimethylene ether glycol), bio‐based glycol (1,4‐butanediol or 1,3‐propanediol), and 4,4'diphenylmethane diisocyanate via a prepolymer route. In the first step, the prepolymer was synthesized from a polyol and diisocyanate. In the second step, the prepared prepolymer terminated with isocyanate group had been extended by using bio‐glycol at three different [NCO]/[OH] molar ratios, namely, 0.9, 0.95, and 1.0. The chemical structure was analyzed using Fourier transform infrared spectroscopy. The Gaussian deconvolution technique was used to study the hydrogen bonding as well as to decompose carbonyl region of three peaks in various TPUs. It has been confirmed that the glycol type and [NCO]/[OH] molar ratio have an effect on the degree of phase separation, and thermomechanical and mechanical properties of resulting materials. It was also observed that the degree of microphase separation increased with increasing content of 1,3‐propanediol used as a chain extender. Materials with the highest [NCO]/[OH] ratio showed the most favorable mechanical properties. POLYM. ENG. SCI., 58:E199–E206, 2018. © 2018 Society of Plastics Engineers

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Bio polyetherurethane composites with high content of natural ingredients: hydroxylated soybean oil based polyol, bio glycol and microcrystalline cellulose

Cited by 62 publications

References 24 publications

Effect of sisal fiber filler on thermal properties of bio-based polyurethane composites

Effect of sisal fiber filler on thermal properties of bio-based polyurethane composites

Investigation of Thermoplastic Polyurethanes Synthesized via Two Different Prepolymers

Effect of molar ratio [NCO]/[OH] groups during prepolymer chains extending step on the morphology and selected mechanical properties of final bio‐based thermoplastic poly(ether‐urethane) materials

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